This Colt M4 Carbine SOCOM (model LE6920 SOCOM) is a semi-auto rifle that fires the .223 round. It has a matte black finish and a 16" M4 barrel. This brand new rifle has a flat-top receiver with rail, a quad-rail forearm with rail covers, a flip-up rear sight, a colapsible stock, sling mounts, and a bayonet lug. It comes with one 30-round magzine, and a box.